<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .father{
            width: 500px;
            height: 200px;
            background-color: red;
            position: relative;
    
            /* overflow: hidden; */
        }
        .father .son1,.father .son2{
            width: 200px;
            height: 200px;
            background-color: yellow;
           
            
        }
        .father .son2{
            margin-left: 20px;
            background-color: aqua;
            position: absolute;
            top: 50px;
            left: 220px;
        }
      
    </style>
</head>
<body>
    <div class="father">
        <div class="son1"> <span>a</span><span>b</span></div>
        <div class="son2"></div>
       
    </div>

    23424332432
</body>
</html>